Why not just use surface mount wire channels or pop off baseboards and hide the wires there ? We're just talking two speakers, right ?

I can't imagine that wireless speakers are ever going to deliver the same cost/performance as wired ones, if only because of all the duplicated electronics.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8